AddDocumentStructure(
)
{
if (this.DocumentStructure != null)
{
// Document structure already available for this FixedDocument
throw new XpsPackagingException(SR.Get(SRID.ReachPackaging_MoreThanOneDocStructure));
}
Uri pageUri = this.CurrentXpsManager.CreateStructureUri();
//
// Create the part and writer
//
PackagePart metroPart = this.CurrentXpsManager.GeneratePart(
XpsS0Markup.DocumentStructureContentType,
pageUri);
_documentStructure = new XpsStructure(CurrentXpsManager, this, metroPart);
//
// Create the relationship between the document and the document-structure
// Not in INode.Flush because IXpsFixedDocumentReader has no commit.
//
string structurePath = XpsManager.MakeRelativePath(this.Uri, _documentStructure.Uri);
_metroPart.CreateRelationship(new Uri(structurePath, UriKind.Relative),
TargetMode.Internal,
XpsS0Markup.StructureRelationshipName
);
return(_documentStructure);
}
EnsureDoucmentStructure()
{
// if _xpsSignaturs is not null we have already initialized this
//
if (null != _documentStructure)
{
return;
}
PackageRelationship documentStructureRelationship = null;
PackagePart documentStructurePart = null;
foreach (PackageRelationship rel in _metroPart.GetRelationshipsByType(XpsS0Markup.StructureRelationshipName))
{
if (documentStructureRelationship != null)
{
throw new InvalidDataException(SR.Get(SRID.ReachPackaging_MoreThanOneDocStructure));
}
documentStructureRelationship = rel;
}
if (documentStructureRelationship != null)
{
Uri documentStructureUri = PackUriHelper.ResolvePartUri(documentStructureRelationship.SourceUri,
documentStructureRelationship.TargetUri);
if (CurrentXpsManager.MetroPackage.PartExists(documentStructureUri))
{
documentStructurePart = CurrentXpsManager.MetroPackage.GetPart(documentStructureUri);
_documentStructure = new XpsStructure(CurrentXpsManager, this, documentStructurePart);
}
}
}